@hvalentim wrote:
What Lexar model are you using?
I had a lot of issues with JumpDrive S25 USB 3.0.
Part of the problem seems to be the plastic used on the tip/connector and the protruding slide button. While placing the pen on Port 3, an additional USB device plugged on port 2 would press against the pen and produce a bad contact.
Also, I found that although the TV proclaimed the format had failed, If I let it sit for a good while, somehow the pen would proceed formatting and in the end (say 30 minutes later) conclude with success (being recognized upon TV reboot).
Anyhow, for me it was impossible to use the Lexar on Port 3. I have since changed to a Samsung and it works fine.
I've got a Lexar JumpDrive P20 64GB USB 3.0. But in 6.0.1 I had issues only using it as extended memory. In 7.0 it does format as extended memory taking a long while (Something like 10 minutes I'd say. in 6.0.1 instead it was showing a failure message if I remember correctly).
Also I did many tests in 6.0.1 using the command line (via adb shell). It really was a mess, for some reason it wasn't really compatible. Now in 7.0 it did format in 10 minutes as I wrote earlier and then mounted correctly. But it was slow and then it went Read Only, like it happened in 6.0.1 with my HDD (but there it took months to go Read Only).
Anyway, I made a thread specific for this issue. If you like we may continue there.
